INTRODUCTIONRecently, material representing an undescribed species of the genus Argeia Dana in the western Atlantic, the first record of that genus from this ocean, became available to me. The previous records of Argeia are of 4 species in the Pacific, including one whose range extends around the entire northern Pacific, and one from the Indian Ocean. Two of the species, though, represented systematic problems which it was necessary to resolve. At the same time, 4 other genera, Parargeia Hansen, Bopyrosa Nierstrasz & Brender à Brandis, Stegoalpheon Chopra and Argeiopsis Kensley, are clearly related to Argeia, but it has been difficult to assign any of them to currently recognized bopyrid subfamilies. Thus a new subfamily containing these 5 genera is proposed herein.

ACKNOWLEDGMENTSProf. Dr. L. B. Holthuis of the Rijksmuseum van Natuurlijke Historie, Leiden (RMNHL), identified and provided to me the parasitized specimens of Sclerocrangon jacqueti which had been collected by the University of Miami's R/V "Columbus Iselin".He also arranged for me to borrow a further specimen of the same species which had been taken by the Michael Sars Expedition and was housed in the Zoological Museum of the University of Bergen, Norway (designated ZMBU), and he tried to locate the typematerial of Bopyrosa phryxiformis for me. Further, he provided a list of the currently accepted names for all of the recorded host species. Dr. W. Lee of the California Academy of Sciences, San Francisco (CAS) allowed me to examine specimens in his collection assigned to Argeia pauperata, and Dr. F. G. Hochberg of the Santa Barbara Museum of Natural History, California (SBMNH) allowed me to examine specimens from his collection and furnished collection data for them. Dr. T. E. Bowman of the